Question: When did Charles the Fat get the noble title as King of Aquitane?
Paraphrase: On what date did Charles the Fat received the noble title of King of Aquitane?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q150712 p:P97 ?s . ?s ps:P97 wd:Q23931012 . ?s pq:P580 ?value}